<template>
	<view>
		<my-search @click="gotoSearch" bgcolor="#C00000"></my-search>
		
		<view class="scroll-view-container">
			<scroll-view class="scroll-left-view" scroll-y="true" :style="{height:wh+'px'}">
				<block v-for="(item,index) in cateList" :key="index">
					<view :class="['left-scroll-view-item',index===active?'active':'']"
					@click="activeChange(index)">{{item.cat_name}}</view>
				</block>
				
				
			</scroll-view>
			<scroll-view class="scroll-right-view" scroll-y="true" :scroll-top="scrollTop" :style="{height:wh+'px'}">
				<view class="cate-lv2" v-for="(item,index) in catelevel2" :key="index">
					<!-- 二级分类 -->
					<view class="cate-lv2-title"> / {{item.cat_name}} / </view>
					<view class="cate-lv3-list">
						<view class="cate-lv3-item" v-for="(item3,idx3) in catelevel2" :key="idx3" @click="gotoGoodsDetail(item3)">
							<image :src="item3.cat_icon"></image>
							<text>{{item3.cat_name}}</text>
						</view>
					</view>
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
	import badgeMix from '@/mixins/tabbar-badge.js'
	export default {
		mixins:[badgeMix],
		data() {
			return {
				wh:0,
				active:0,
				scrollTop:0,
				cateList:[],
				catelevel2:[]
			};
		},
		onLoad() {
			const sysInfo = uni.getSystemInfoSync()
			this.wh = sysInfo.windowHeight - 50 //减去搜索高度
			this.getCateList()
		},
		methods:{
			async getCateList(){
				uni.$http.sslVerify=true
				const {data:res} = await uni.$http.get('/api/public/v1/categories')
				console.log(res)
				if(res.meta.status!=200){
					return this.$showMsg()
				}
				this.cateList = res.message
				this.catelevel2 = res.message[0].children
			},
			activeChange(index){
				this.active = index
				this.catelevel2 = this.cateList[index].children
				this.scrollTop =this.scrollTop ===0?1:0
			},
			gotoGoodsDetail(goods){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?cid='+goods.cat_id
				})
			},
			gotoSearch(){
				uni.navigateTo({
					url:'/subpkg/search/search'
				})
			}
		}
		
	}
</script>

<style lang="scss">
.scroll-view-container{
	display: flex;
	
	.scroll-left-view{
		width: 120px;
		
		.left-scroll-view-item{
			background-color: #f7f7f7;
			line-height: 60px;
			font-size: 12px;
			text-align: center;
			
			&.active{
				position: relative;
				background-color: #ffffff;
				
				&::before{
					position:absolute;
					content: ' ';
					display: block;
					width: 3px;
					height: 30px;
					background-color: #C55555;
					top: 50%;
					left:0;
					transform: translateY(-50%);
				}
			}
		}
	}
	.scroll-right-view{
		flex: 1;
	}
	.cate-lv2-title{
		font-size: 12px;
		font-weight: bold;
		text-align: center;
		padding: 15px 0;
	}
	.cate-lv3-list{
		display: flex;
		flex-wrap: wrap;
		.cate-lv3-item{
			width: 33.33%;
			display: flex;
			flex-direction: column;
			justify-content: center;
			align-items: center;
			image{
				width: 60px;
				height: 60px;
			}
			text{
				font-size: 12px;
			}
		}
	}
}
</style>
